US6394112B1 - Pipe cleaning nozzle - Google Patents
Pipe cleaning nozzle Download PDFInfo
- Publication number
- US6394112B1 US6394112B1 US09/532,441 US53244100A US6394112B1 US 6394112 B1 US6394112 B1 US 6394112B1 US 53244100 A US53244100 A US 53244100A US 6394112 B1 US6394112 B1 US 6394112B1
- Authority
- US
- United States
- Prior art keywords
- nozzle
- nozzle head
- pipe cleaning
- pipe
- orifices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
- B08B9/0495—Nozzles propelled by fluid jets
Definitions
- the present invention relates to a pipe cleaning nozzle for the cleaning of pipe conduits, particularly of pipe conduits in toilet systems of aircraft, by use of a pressurized cleaning jet.
- German Patent 197 03 317 A1 describes a pipe cleaning nozzle which is subjected to a pressure of about 400 bar to 420 bar.
- the nozzle orifices, directed toward the outside, are configured to eject pressurized jets with high kinetic energy to destroy and wash off the impurities attached to the pipe wall.
- the pipe cleaning nozzle comprises a nozzle head which is by a few millimeters smaller than the free cross section of the pipe so that the pressurized jets will impinge on the deposits with high energy.
- the pressurized jets largely oriented in radial directions, have rearward axial component provided to generate the advance movement of the nozzle head in the pipe conduit. In this manner, the nozzle head will move through the pipe conduit to be cleaned, while taking along the high-pressure hose connected thereto for supply of the cleaning liquid.
- the toilet pipes connected to a vacuum source have diameters in the range of 50 mm. These toilet pipes can have a length of 70 to 100 m, and their course has to follow small-radiused bends and curves. Further, such pipes conduits include portions where the pipes are guided horizontally or vertically. Cleaning work to be carried out on such pipes is extremely difficult.
- the cleaning nozzle according to the instant invention comprises a concave rear wall having its deepened portion provided with the connector piece for the high-pressure hose.
- the nozzle head has an extremely short constructional length. A part of the length of the connector piece has been sunk, as it were, into the nozzle head so that the overall length of the combined nozzle head and connector piece can be kept short. Since the connector piece and the nozzle head form a rigid unit, the length of this unit will determine the smallest radius of curvature of the pipe that would still allow the passage of the cleaning unit.
- the outer diameter of the nozzle head is about twice as large as the outer diameter of the connector piece, so that, on the one hand, the nozzle orifices will come close to the pipe wall while, on the other hand, the connector piece can be given the smallest possible diameter.
- the nozzle head has a convex front wall.
- the convex front wall and the concave rear wall together have a shape similar to that of a mushroom head.
- Arranged inside the nozzle head is the distributor chamber for the pressurized fluid while the nozzle orifices are arranged on a circumferential portion which has a relatively large diameter as compared to the diameter of the connector piece.
- the front wall and/or the rear wall are formed as spherical shells.
- the instant invention further relates to a method for the cleaning of pipe conduits by use of a pipe cleaning nozzle comprising a connector piece and nozzle orifices, with the nozzle orifices directed radially outwards and having an axial component oriented in the direction of the connector piece.
- a pipe cleaning nozzle comprising a connector piece and nozzle orifices, with the nozzle orifices directed radially outwards and having an axial component oriented in the direction of the connector piece.
- that pipe portion which is facing away from the connector piece is connected to a suction source for the removal of detached deposits. This means that the cleaning jets are discharged from the nozzle head with a rearward component while the suction source performs the suctional removal in the forward direction.
- forward in the present context is meant to denote the moving direction of the pipe cleaning nozzle during the advance movement, wherein the advance movement is generated by the recoil effect of the discharged cleaning jets.
- the mixture of cleaning liquid and deposits is positively drained in the direction opposite to the direction of the detachment.
- FIG. 1 is a longitudinal sectional view of a pipe conduit with the pipe cleaning nozzle arranged therein,
- FIG. 2 is a sectional view along the line II—II in FIG. 1, and
- FIG. 3 is a view similar to FIG. 1, illustrating the pipe cleaning process performed with simultaneous suctional removal.
- FIG. 1 illustrates a pipe 10 to be cleaned, which pipe is a vacuum toilet pipe of an aircraft.
- the pipe diameter is about 50 mm, and the wall thickness is about 0.4 mm.
- the pipe is made of titanium.
- Pipe cleaning nozzle 11 is moved internally through pipe 10 .
- Pipe cleaning nozzle 11 comprises a nozzle head 12 formed as a hollow body with a connector piece 13 axially projecting therefrom.
- Connector piece 13 has a threaded sleeve 14 mounted thereon by threaded engagement which is part of a hose coupling being in turn connected to the end of a flexible high-pressure hose 15 .
- High-pressure hose 15 has an inner diameter of 6 mm and a wall thickness of 4 mm.
- the hose is a rubber hose with an two-layered steel lining internally thereof.
- Nozzle head 12 comprises a convexly shaped partial-spherical front wall 16 and a concavely shaped, likewise partial-spherical rear wall 17 .
- Front wall 16 and rear wall 17 are connected to each other by welding on an outer edge 18 .
- the connector piece 13 is welded to the center of rear wall 17 .
- Connector piece 13 has a liquid channel 19 extending therethrough, arranged to lead into the internal chamber 20 of nozzle head 12 .
- nozzle head 12 has a sickle-shaped longitudinal section.
- the circumferential edge of front wall 16 is formed with tubular nozzle orifices 21 which are directed radially outward but are oriented to have an axial rearward component. Nozzle orifices are arranged at an angle of 20° to 25° relative to the radial plane of the nozzle head. Each nozzle orifice is provided for discharge of a high-pressure jet 22 which is directed against pipe wall 10 to destroy and wash off deposits 23 attached to wall 10 .
- the high-pressure jets 22 will generate longitudinal grooves 24 in the deposits 23 , thus separating the remaining deposits 25 from each other. These residual deposits 25 are underwashed according to FIG. 1 and will finally also become detached from the pipe wall.
- High-pressure hose 15 is connected to a high-pressure pump (not illustrated) designed to have a feed pressure of 400 to 420 bar and to deliver a conveying quantity of 64 liters/min.
- Nozzle had 12 is made from stainless steel.
- nozzle heads are available in two sizes, notably with an outer diameter of 33 mm and an outer diameter of 43 mm, with the wall thickness being 2.3 mm in each case. The choice of the nozzle head in the respective case will depend on the thickness of the deposits 23 .
- Nozzle head 12 presents a number of 8-24 circumferentially distributed nozzle orifices which have a total cross section of 6 to 7 mm 2 .
- the constructional length of the pipe cleaning nozzle comprising nozzle head 12 and connector piece 13 is at maximum roughly as large as the outer diameter of the nozzle head.
- FIG. 3 is a view of the above described pipe cleaning nozzle during the cleaning process with vacuum suction.
- a suction source is connected to that pipe portion 10 a which is facing away from connector piece 13 so that the suctional removal is performed in the direction of arrow 30 .
- the high-pressure 22 jets are directed axially rearwards (to the right-hand side in the FIG. 3) and underwash the deposits 23 .
- the suction effect forces the mixture of cleaning water and the deposits to flow off in the opposite direction, i.e. in the forward direction, into a collector tank. This feature also obviates the need to have the impurities flow through the already cleaned pipe portion.
- the vacuum pump delivers a vacuum pressure of 0.1 to 0.3 bar with a conveying quantity of 15 m 3 /h.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19913728A DE19913728C1 (en) | 1999-03-26 | 1999-03-26 | Pipe cleaning nozzle |
DE19913728 | 1999-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US6394112B1 true US6394112B1 (en) | 2002-05-28 |
Family
ID=7902487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/532,441 Expired - Fee Related US6394112B1 (en) | 1999-03-26 | 2000-03-23 | Pipe cleaning nozzle |
Country Status (3)
Country | Link |
---|---|
US (1) | US6394112B1 (en) |
EP (1) | EP1046434B1 (en) |
DE (2) | DE19913728C1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6655393B2 (en) * | 2000-08-04 | 2003-12-02 | Grease Duct Technologies, Llc | Grease exhaust cleaning system |
US20050022842A1 (en) * | 2003-05-27 | 2005-02-03 | Alstom Technology Ltd | Device and method for mechanical cleaning of grooves |
US20050150525A1 (en) * | 2002-01-21 | 2005-07-14 | Minebea Co., Ltd. | Cleaning method and cleaning device for fluid dynamic bearings component |
US20090071513A1 (en) * | 2007-08-31 | 2009-03-19 | Bo Larsson | Hydrodynamic nozzle |
US20110048559A1 (en) * | 2008-05-07 | 2011-03-03 | Hydrascan Limited | Conduit cleaning apparatus |
US20150013724A1 (en) * | 2013-07-12 | 2015-01-15 | Daniel Grenier | Method and system of removing debris from piping in a high-rise building plumbing network |
WO2015142606A1 (en) * | 2014-03-15 | 2015-09-24 | Northern Divers Usa | Intake pipe cleaning system and method |
CN106890828A (en) * | 2017-03-29 | 2017-06-27 | 成都理工大学 | A kind of multi-functional pipe inner-wall cleaning device and its clean method |
CN107866424A (en) * | 2017-12-11 | 2018-04-03 | 北京航天益森风洞工程技术有限公司 | A kind of high-pressure hydraulic washer for inside pipeline |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2830470A1 (en) * | 2002-02-06 | 2003-04-11 | Hydrolog | Machine for cleaning drainage systems has pump vehicles to feed water to cleaning hose and extract soiled water |
DE102007002526A1 (en) | 2007-01-17 | 2008-07-24 | Airmatic Gesellschaft für Umwelt und Technik mbH | Device for pipe cleaning with high-pressure vacuum technology |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1587194A (en) * | 1925-07-23 | 1926-06-01 | Sidney C Sladden | Self-propelling hose nozzle |
US3656694A (en) * | 1970-12-10 | 1972-04-18 | John A Kirschke | Sewer cleaning chemical dispensing nozzles |
US4216738A (en) * | 1977-12-21 | 1980-08-12 | Kabushiki Kaisha Kankyo Kaihatsu | Method of renewing water pipe, including coating thereof, and apparatus therefor |
US4764180A (en) * | 1987-01-22 | 1988-08-16 | The Pullman Peabody Company | Method of manufacturing jet nozzles |
US4819314A (en) * | 1987-01-22 | 1989-04-11 | The Pullman Peabody Company | Jet nozzles |
DE4013547A1 (en) * | 1990-04-27 | 1991-10-31 | Abb Patent Gmbh | Cable conduit cleaning system - uses pressurised air hose propelled along cable conduit via discharged air stream |
US5241723A (en) * | 1991-10-21 | 1993-09-07 | The Babcock & Wilcox Company | Nozzle structure with improved stream coherence |
US5992432A (en) * | 1995-05-11 | 1999-11-30 | Hoerger; Kurt | Hydrodynamic nozzle for cleaning pipes and channels |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8900449A (en) * | 1989-02-23 | 1990-09-17 | Hoogovens Groep Bv | DEVICE FOR INTERNAL CLEANING OF A TUBE. |
SE506851C2 (en) * | 1996-06-27 | 1998-02-16 | Gollum Enterprises Inc | Nozzle for internal cleaning and / or painting of pipelines |
DE19703317A1 (en) * | 1997-01-30 | 1998-08-06 | Lufthansa Technik Ag | Method and device for cleaning pipelines |
-
1999
- 1999-03-26 DE DE19913728A patent/DE19913728C1/en not_active Expired - Fee Related
-
2000
- 2000-03-17 DE DE50004688T patent/DE50004688D1/en not_active Expired - Fee Related
- 2000-03-17 EP EP00105678A patent/EP1046434B1/en not_active Expired - Lifetime
- 2000-03-23 US US09/532,441 patent/US6394112B1/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1587194A (en) * | 1925-07-23 | 1926-06-01 | Sidney C Sladden | Self-propelling hose nozzle |
US3656694A (en) * | 1970-12-10 | 1972-04-18 | John A Kirschke | Sewer cleaning chemical dispensing nozzles |
US4216738A (en) * | 1977-12-21 | 1980-08-12 | Kabushiki Kaisha Kankyo Kaihatsu | Method of renewing water pipe, including coating thereof, and apparatus therefor |
US4764180A (en) * | 1987-01-22 | 1988-08-16 | The Pullman Peabody Company | Method of manufacturing jet nozzles |
US4819314A (en) * | 1987-01-22 | 1989-04-11 | The Pullman Peabody Company | Jet nozzles |
DE4013547A1 (en) * | 1990-04-27 | 1991-10-31 | Abb Patent Gmbh | Cable conduit cleaning system - uses pressurised air hose propelled along cable conduit via discharged air stream |
US5241723A (en) * | 1991-10-21 | 1993-09-07 | The Babcock & Wilcox Company | Nozzle structure with improved stream coherence |
US5992432A (en) * | 1995-05-11 | 1999-11-30 | Hoerger; Kurt | Hydrodynamic nozzle for cleaning pipes and channels |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6655393B2 (en) * | 2000-08-04 | 2003-12-02 | Grease Duct Technologies, Llc | Grease exhaust cleaning system |
US20050150525A1 (en) * | 2002-01-21 | 2005-07-14 | Minebea Co., Ltd. | Cleaning method and cleaning device for fluid dynamic bearings component |
US20050022842A1 (en) * | 2003-05-27 | 2005-02-03 | Alstom Technology Ltd | Device and method for mechanical cleaning of grooves |
US7094293B2 (en) * | 2003-05-27 | 2006-08-22 | Alstom Technology Ltd. | Device and method for mechanical cleaning of grooves |
US20060254016A1 (en) * | 2003-05-27 | 2006-11-16 | Alstom Technology Ltd. | Device and method for mechanical cleaning of grooves |
US20090235479A1 (en) * | 2003-05-27 | 2009-09-24 | Alstom Technology Ltd | Device and method for mechanical cleaning of grooves |
US7845040B2 (en) | 2003-05-27 | 2010-12-07 | Alstom Technology Ltd | Device and method for mechanical cleaning of grooves |
US8366835B2 (en) * | 2007-08-31 | 2013-02-05 | Bl Consult Bo Larsson | Hydrodynamic nozzle |
US20090071513A1 (en) * | 2007-08-31 | 2009-03-19 | Bo Larsson | Hydrodynamic nozzle |
US20110048559A1 (en) * | 2008-05-07 | 2011-03-03 | Hydrascan Limited | Conduit cleaning apparatus |
US8940108B2 (en) * | 2008-05-07 | 2015-01-27 | Hydrascan Limited | Conduit cleaning apparatus |
US20150013724A1 (en) * | 2013-07-12 | 2015-01-15 | Daniel Grenier | Method and system of removing debris from piping in a high-rise building plumbing network |
US10301804B2 (en) * | 2013-07-12 | 2019-05-28 | Daniel Grenier | Method and system of removing debris from piping in a high-rise building plumbing network |
WO2015142606A1 (en) * | 2014-03-15 | 2015-09-24 | Northern Divers Usa | Intake pipe cleaning system and method |
US9687891B2 (en) | 2014-03-15 | 2017-06-27 | Northern Divers Usa | Intake pipe cleaning system and method |
CN106890828A (en) * | 2017-03-29 | 2017-06-27 | 成都理工大学 | A kind of multi-functional pipe inner-wall cleaning device and its clean method |
CN106890828B (en) * | 2017-03-29 | 2023-05-30 | 成都理工大学 | Multifunctional pipe inner wall cleaning device and cleaning method thereof |
CN107866424A (en) * | 2017-12-11 | 2018-04-03 | 北京航天益森风洞工程技术有限公司 | A kind of high-pressure hydraulic washer for inside pipeline |
Also Published As
Publication number | Publication date |
---|---|
EP1046434A3 (en) | 2001-02-14 |
DE50004688D1 (en) | 2004-01-22 |
EP1046434B1 (en) | 2003-12-10 |
EP1046434A2 (en) | 2000-10-25 |
DE19913728C1 (en) | 2000-10-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LUFTHANSA TECHNIK AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:STEINMETZ, UWE;ZANG, STEFFEN;DITTMAR, THOMAS;AND OTHERS;REEL/FRAME:010641/0813;SIGNING DATES FROM 20000216 TO 20000217 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20140528 |